How to make a simple audio equalizer for the iPhone? -


I want to make a simple audio equalizer for the iPhone, but I do not know how to get started. Equalizer should really be simple and just change bass, high, distortion and maybe echo and chorus. How can i start Perhaps a sample code would be helpful.

First of all you are confused in your vocabulary.

An equalizer changes the frequency response of just one audio channel, usually there is a fixed number of frequency band, whose personal benefit can be controlled by the user.

Distortion, Echo, Chorus, etc. Effects - In the digital domain, they are just modifying the data by changing the algorithm that apply to an audio channel.

So you need to decide what you're designing: an equalizer, some type of processing processing machine, or maybe some of these combinations.

Once you want to implement it, you have a tough design, you can start working on the various algorithms used to implement this design. For Equalizer you can consider filtering the frequency domain or implementing the time domain filter bank. For the part of the effect, you have to do some research in various research and how they are implemented, e.g. Distortion usually uses some non-linear transfer function to present additional harmonic materials.


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